Electric light socket



Dec. 4, 1934. v D. BAUM 1,982,627

ELECTRIC LIGHT SOCKET Filed Jan. '7, 1928 Patented Dec. 4, 1934 UNITEDSTATES ELECTRIC LIGHT SOCKET David Baum, Brooklyn,

N. Y., assignor to Leviton Manufacturing Company, Brooklyn, N. Y., a

corporation of New Application January 7,

2 Claims.

This invention relates to an electric light socket which comprises abase of insulating material somewhat in the form of a thick disc with ascrew shell attached to one face of the disc with electric wires passingthrough the disc. The socket ,is provided with an insulating sleevesurrounding the screw shell and a metal shell surrounding the sleeve andattached to the insulating base.

The invention will be understood from the description in connection withthe accompanying drawing, in which Fig. 1 is a plan View of anillustrative embodiment of the invention; Fig. 2 is a section along theline 2--2 of Fig. 1, and Fig. 3 is a section along the line 3-3 of Fig.2.

In the drawing, reference character 1 indicates a circular base ofinsulating material, such as porcelain or hard rubber, for example, inthe form of a thick disc with an upper rim 2 that is of slightly largerdiameter than the remainder of the disc. A plurality of notches 3extending ran dially inwardly is provided around the perimeter of therim 2 for a purpose to be described below, four such notches being shownin the illustrative embodiment of the invention. An outer metal shell 4is attached to the base 1 by crimping its upper edge at intervals, asshown at 5, to bend portions of it into the notches 3 so as to keepv theshell 4 in place on the base 1. The shell 4 may be provided with ringsor beads 6 of a well-known sort.

The base 1 is provided with a plurality of holes 7 extendingtherethrough in the axial direction of the socket. Three such holes areshown disposed in a row across a diameter of the base 1 and the upperend of each hole is provided with a deep countersunk portion that issomewhat larger than the remainder of the hole. Metal sleeves 8, 9 and10 are located in the holes 7 and the ends thereof are expanded orturned outwardly so as to keep the metal sleeves securely in place inthe holes with the upper ends of the sleeves 8, 9 and 10 in thecountersunk portions some distance below the outside surface or face ofthe base 1.

A screw shell 12 is attached to the base 1 by having the lower ends ofthe .metal sleeves 8 and 10 passing through holes in the bottom of thescrew shell 12 and being expanded over the same to keep the screw shellin place against the base 1, as most clearly shown in Fig. 2. Atransverse opening extends entirely across the bottom or end portion ofthe screw shell 12, leaving segmental portions on each side of thetransverse opening to which segmental portions, the metal sleeves 8 and10 are connected. The transverse opening in the shell 12 ts over acorrespondingly shaped rectangular projecting portion 14 on the base 1when the parts are in place.

One of the electric wires 15 extends through the metal sleeve 9 at thecenter of the base 1 and its end is soldered, as shown at 16, to the ex-York 1928, Serial No. 245,086

panded lower-end of the Asleeve 9. The sleeve 9 extends through a holein the center spring contact member 17 and the lower end of the sleeve 9is expanded over the same to keep it in place in a recess 18 in theprojecting portion 14 of the base 1.

The other wire 19 of the circuit passes through the sleeve 10 and itsend is soldered to the ex panded end of the sleeve 10, as indicated at20, to keep the wire in place.

A sleeve 21 of insulating material surrounds the screw shell 12 and theupper end thereof is enlarged, as shown at 22, to fit into an enlargedupper portion of the metal shell 4 so that the insulating sleeve will bekept in place.

In assembling the device, the base l and shell 12 may be placed incontact with each other and the sleeves 8 and 10 put in place and theends expanded. The center contact may then be put in place and thesleeve 9 passed through the holes in the base 1 and center contact andits ends expanded to keep the center contact in place. The electricwires 15 and 19 may then be inserted and solderedin place. Theinsulating sleeve 21 is slipped over the metal shell 12, the sleeve 4put on and the portions 5 thereof bent into place in the notches 3 tohold the same and the insulating sleeve in assembled relation withrespect to the base 1. It is obvious that the device may be used as anelectric light socket or a socket into which a screw plug of a cord maybe screwed or a fuse of the screw plug type may be inserted.

I claim:

1. In an electric light socket, an insulating base having notcheswithcircumferentially extending end walls therein and also having aprojecting annular rim at its end, a screw shell attached to said base,an insulating sleeve around said shell having an enlarged end, and ametal shell around said sleeve with portions extending beyond the bottomof said base into said notches and with an enlarged portion toaccommodate said enlarged end of said sleeve and keep said sleeve inplace.

2. In an electric light socket, an insulating base having notches withcircumferentially extending end walls therein and also having aprojecting annular rim at its end, a screw shell attached to said base,an insulating sleeve around said shell having an enlarged end, and ametal shell around said sleeve with portions extending into said notchesand with an enlarged portion to accommodate said enlarged end of saidsleeve and keep said sleeve in place.

DAVID BAUM.

